Improvement in paper-cutting machines



J.' L. GREGORIE.

Paper Cutting Machine.

P atented March 5, 1872.

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IMPROVEMENT IN PAPER-CUTTING MACHINES.

Specification forming part of Letters Patent No. 124,352, dated March 5,1872.

SPECIFICATION.

To all lwhom t may concern:

. Be it known that I, JAMES LADSON GREG- ORLE, of Chicago, in the countyof Cook and State of Illinois, have invented certain Improvements inCard-Board-Gutting Machine or Squaring-Shears, of which the following isa specification, reference being had to the ac compan yin g drawin 0.

My invention relates to a machine for cutting card-board, straw-board,86e., into pieces of any required size; and consists in a novel mannerof constructing and combining the various parts of the machine, ashereinafter described.

Figure l is a side elevation of my machine. Fig. 2 is a longitudinalvertical section through the middle of the same. Fig. 3 is a top-planview of the machine. Fig. 4 is a rear-end View of the machine, lookingupward in line with the bed or table.

A represents the frame of my machine, consisting of two side pieces orlegs connected by cross-bars. On the frame A is secured an inclinedstationary table, Bfon which the material to be cut is laid; and to across-bar, c, at the lower end of the table B the lower knife or cutterC is rigidly bolted, as shown in Fic'. 2. 0n each side ofthe frame A isan inclined slotted standard, c, and across the top of the machine isplaced a strong bar or head, D, having its ends arranged to slide in thestandards c, and having the upper knife or cutterblade E bolted to itsside, as shown in Figs. 2, 3, and 4. Across the machine below thetableis mounted a horizontal shaft, F, on the ends of which are securedeccentrics Gr, which are connected by pitmen H with the respective endsofthe cross-bar D, so that when the shaft is turned the eecentrics andpitmen move the bar D with its knife up and down, the knife at eachdescent being carried down close- 1y past the lower stationary knife C.The upper knife is arranged in the usual manner, with one end of itscutting-edge higher than the other, so as to operate with a draw orshear cut. I is an inclined bed orA table, forming a continuation of thetable B on the opposite side of the cutters. The upper edge otthe tableI is attached to a bar, d, which has its ends pivoted in the sides ofthe main fraaie, while the lower edge is supported on an ellipticspring, e, as shown in Figs. 2 and 4, so that it can be depressed, ashereinafter described. To each rear corner of the table I there ispivoted a bar, f, having its opposite end slotted and mounted on a studon the corresponding pitman H, as shown in Figs. l and 3, so that eachtime the pitmen draw the upper knife down they also draw down the bars fand depress the lower edge of table I, the table being again raised bythe spring as the pitmen ascend. In the main frame under the table I ismounted a longitudinal sliding bar, g, operated by a screw and handwheel, h, as shown in Figs. 2 and 4, and on said bar are formed lateralarms g', which extend up past the sides of table I, and have a crossbar,J, secured to their upper ends, as shown in all the figures. When thetable I is up in its natural position it bears against the under side ofthe bar J 5 but when it is depressed an open space is left between itand the bar, through which the pieces or strips of card-board pass afterbeing out oit'. The sheets which are to be cut are shoved or allowed toslide through between the knives and against the bar J, which thusserves as a gauge to determine the width of the pieces.

By turning the hand-wheel h the bar J may be moved toward or from thecutters, so as to adjust the machine for cutting any required Width.

Immediately over the lower knife. C there is mounted a pinch-bar, K,having its ends pivoted to the frame at the points i i, as shown inFigs. 2 and 3. On each end of the pinchbar there is an upright arm, 7c,with a roller on its end, against which springs l bear, so as to tip thebar and force its lower edge down upon the lower knife C. 0n each' endof the bar D, which carries the upper knife, there is an incline, m, andwhen the bar rises theseinclin-es strike the upper ends of arms k andtip the pinch-bar K so as to raise its lower edge.

The various parts being arranged as described, ifa sheet of card-boardbe placed on the table B andthe shaft F turned? the following operationswill take place: First, the upper knife rises and the pinch-bar K tiltsso as to let the sheet slide dowir under it against the gauge-bar J.rIhe pinch-bar K then locks down upon the sheet and holds it in place,

while the knife descends and cuts through it. As soonas the knife hasfinished its cut the table I drops down and permits the strip or piececut o' to slide down under the barJ and out of the machine. The knifethen ascends, the table rises against the bar, and the pinchbar releasesthe sheet, which slides down as before against bar J. The formeroperations are then repeated, and so on continuously, the sheets beingautomatically fed down, cut into strips of equal size, Iand deliveredfrom the machine.

As there is sometimes a tendency of the lowerl ed ge of the sheet tocurl up, so that the strips after being cut 0E will not pass under bar Jwhen the table is depressed, there is attached to theV upper side ofsaid bar another bar, L, havin g its face inclined under, so as t0 forcethe edge ot the sheet down. 'l'his barL is provided under each end withaI small stud or leg, o, as shown in Figs. 2 and 3, and it is soconnected to the bar J as to have a. little vertical play thereon. 'heuthe table I is up in position t-he legs o bear thereon and hohl the barL up sufficiently to let the ed ge ofthe cardboard pass under it andagainst the face ot' bar J 5 but when the table is depressed to let thecard-board slide out the bar L drops down so that its edge is below thatof bar J, so as to guide the card-board under said bar J and prevent itfrom catching thereon. 0u

the table B I mount two guide-bars7 M, which are adjustable laterally,and in the center of the table I place a detachable guide-bar Whencard-board or other material is to be cut up into cards or pieces thecentral guide O is removed, the guides M properly adjusted, and thesheets fed tl'lrough the machine and cut into strips. After this hasbeen done the central guide O is secured in place, the outside guidesadjusted, and the strips passed through the machine two at a time andcut into pieces of the required size.

Having fully described my invention, what I claim isl. The combinationof the shaft F, eccentries G, pitmen H, and bars f with spring @foroperating' automatically the pivoted table I, as and for the purpose setforth.

2. In combination with the pivoted table I and gauge-bar J, arranged rooperate as described, I claim the Vertically'sliding bar L, constructedas described, as and for the purpose set forth.

In combination with the moving,1 head D,

the pivoted pinch-bar K and springs l, when constructed and arrangedsubstantially as described, for automatically clamping the cardboard, asset forth.

JAMES LADSON GREGORIE.

Vitnesses SMIL. T. GREEN, Furrz FoL'rz.

